square sail

noun
\ ˈskwer-ˌsāl How to pronounce square sail (audio) , -səl\

Definition of square sail

: a 4-sided sail extended on a yard suspended at the middle from a mast

Examples of square sail in a Sentence

Recent Examples on the Web

After seven days in space, LightSail 2 will pop out of its container, extend four long booms, and deploy four sheets of mirror-like Mylar plastic into a 340-square-foot, square sail. NBC News, "Spacecraft that sail on sunshine could be the next big thing in spaceflight," 3 June 2019 When the wind blew favorably, the crew would have hoisted a square sail on the mast; the rest of the time, rowers would have lined up on the benches and propelled the ship along with large oars. Kiona N. Smith, Ars Technica, "This ancient Greek ship is the oldest intact shipwreck ever discovered," 24 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'square sail.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of square sail

1600, in the meaning defined above

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Time Traveler for square sail

The first known use of square sail was in 1600

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More from Merriam-Webster on square sail

Rhyming Dictionary: Words that rhyme with square sail

Britannica.com: Encyclopedia article about square sail

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